Add latest changes from gitlab-org/gitlab@master

lib/gitlab_settings.rb

@@ -0,0 +1,17 @@
+# frozen_string_literal: true
+
+require "active_support"
+require "active_support/core_ext/hash"
+
+require_relative 'gitlab_settings/settings'
+require_relative 'gitlab_settings/options'
+
+module GitlabSettings
+  MissingSetting = Class.new(StandardError)
+
+  def self.load(source = nil, section = nil, &block)
+    Settings
+    .new(source, section)
+    .extend(Module.new(&block))
+  end
+end